Finding the Fourth Proportional to 12,790,845.81, 17,651,598.21 and 6,989,872.05
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Solution
The fourth proportional to 12,790,845.81, 17,651,598.21 and 6,989,872.05 is: 9,646,149.66
Step by Step Solution
- Step 1: Write the proportion equation
12,790,845.81 : 17,651,598.21 = 6,989,872.05 : x - Step 2: Convert to fraction form
12,790,845.81/17,651,598.21 = 6,989,872.05/x - Step 3: Cross multiply
12,790,845.81x = 17,651,598.21 × 6,989,872.05 - Step 4: Simplify right side
12,790,845.81x = 123,382,412,965,909.03 - Step 5: Solve for x
x = 123,382,412,965,909.03/12,790,845.81 - Step 6: Final answer
x = 9,646,149.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.